ASP (full name Active Server Pages) is a programming environment where you can mix HTML, scripting languages, and components to create server-side powerful Internet applications. If you have previously created a site that mixes HTML, scripting languages, and components, you can add ASP program code to it. Also, you can include some business logic rules by using components. A component can be called by a script program or by another component. The following is a list of the basic techniques used in 19 ASP scripting languages:
1. The current date-time command is
The following is a reference fragment:
<%=now%> can
Each item request. From ("Input"))
Repomse.write Item & "<br>"
Next
%>
Also available for each x in Tewuest. From "repeatedly gets the input values for all fields.
The 2.ASP method of obtaining a tabular (from) data input is to use a built-in object-requect, which varies by get,post.
3. If you want to write in VB or other languages, the. dll file is used by the ASP to register the DLL file: dos input Regsbr32 *.dll.
4. Display five repeating sentences, the font is getting larger and bigger.
The following is a reference fragment:
<% for I=1 to 5%>
<font size=<% =i%> color= #00ffff >
Fast ASP
</font>
<br>
<% Next%>
5. Transfer the string to the client
Response.Write string
The following is a reference fragment:
such as: <% Response.Write "Welcome"%>
6. Link to the specified URL address
Response.Redirect URL
The following is a reference fragment:
such as: <% Response.Redirect "homepage.asp" >
* But if this. If the ASP's file content has been transmitted to the user, the error will occur when using redirect again.
7. Integration of other languages with ASP:
The following is a reference fragment:
Such as: Morning display Good morning, afternoon display Hello
<%
If time>+ #12:00:00 am# and time< #12:00:00 PM #
Then
Greeting= "Good morning!"
Else
greeting= "Hello!"
End If
%>
<%=greeting%>
8. The application of <script> tag in ASP
The following is a reference fragment:
Cases:
<body>
<% Call Function1%>
</body>
<script Runat=server language=javascript>
function Function1 ()
{
...
}
</script>
9. #include including other documents
<!--#include virtual|file= "filename"--
Virtual refers to a fictitious file address.
File represents an absolute document address.
Such as:
The following is a reference fragment:
<!--#include virtual= "/booksamp/test.asp"-
<!--#include file= "/test/test.asp"-
and can be nested in layers. Another # include cannot be within <%--%>.
10.ASP How to obtain tabular input data: Get POST
A. Get: The user adds data to the URL, in the format "? field 1 = Input data 1& field 2 = input data 2& ...", and then send it to the server.
For example: actionwww.abc.com, field name input data is Jack, field age data is 15.
Two. Post: The client is routed to the server ASP with HTTP information data:
Get: Use input data = request.querystring (field name) to remove the data appended to the URL.
Post: Use "input data =request.forml" (Field name ")" to read the HTTP Information data field.
The following is a reference fragment:
* Request.QueryString Example
such as: 〈a hery= "aspform.asp? Name=jack&age=15 ">
Click here to 〈/a〉〈p〉
Name:<%=request. QueryString ("Name")%)
Age:<%=request. Qeuerystring ("age")%)
* Get Example
aspturm.asp:
<form action= "asp1b.asp" method= "Get" >
Name: <input type=text name= "input1" value= "Your name" >
<p>
Features: <select name= "Input2" >
<option>cool!
<option>handsome
<option>warmhearted
</select>
<input type=submit value= "OK" >
</form>
Asp1b.asp's Content
<% =request.querystring ("input1")%> Hi, your character is
<%= request.querystring ("Input2")%>
</body>
11.request. From
Syntax: request. from (name) [(index) |. Count
Name: Field name
Index: When multiple values are entered in the same field, the pointer value index specifies the value to read from the same field, ranging from 1 to request. From (name). Count
Count: By request. From (name). Count indicates that the name field enters several values, and if there is no this name field, Count is 0
The following example:
The following is a reference fragment:
<%
Fori=1 to Request.fron ("INPUT1"). Count
Response.Write Request. From ("Input1") (I) & "<br>"
Next
%>
If the INPUT1 has two values, it shows which one is read if it is not specified with index. Available
The following is a reference fragment:
〈%
For
<% for each x in request. Form%>
Request. From (<%=x%) =<%=request. Form
(x)%> <br>
<% Next%>
12. How to obtain the client TCP/IP port:
such as: TCP/IP port is <%=request ("Server_port")%>
Use Server_port to get the connection port information for receiving HTTP request.
13. Through the Http_accept_language HTTP header information, you can get the user side of the use of the language environment.
The following example determines the locale of the client and gives a different page.
The following is a reference fragment:
<% language=request.servervariables ("Http_accept_language")
If language= "en" then%>
<!--#include file= "english.asp" >
<% Else%>
<!--#include file= "china.asp" >
<% End If%>
14. Duration of the home page retention
If the client browser browses this page again within the duration of a page retention, the page content that was originally on the user's hard drive will be displayed.
Response.expires[=number]
Where number is the retention period for the Record Data box (PAGE box), in minutes.
Or: response.expiresabsolute[=2004-10-14 7:31:25[time]]
such as: set a page retention period to a certain date.
15. Connect to the specified URL address
Such as: you want to confirm that the user has seen index.htm, you can check whether it has been seen, if not confirmed, automatically connected to the first page
The following is a reference fragment:
<%
If not session ("Been_to_home_page") Then
Response.Redirect "Index.asp"
End If
%>
16. Decide whether to return to this page or the first time to enter
The following is a reference fragment:
<%
If User_has_been_here_before Then
Response.Write "
Again
Else
Response.Write "Welcome!"
End If
%>
17. Displaying pictures in the database with super connections
The following is a reference fragment:
<%
Set Conn=server.creatobject ("Adodb.connection")
Conn.Open "Myaddress"
Set Rs=conn.execute ("Select Name,tel,url,image from
Myaddress ")
%>
<p>
<tabel>
<tr>
<% for i=0 to Rs.fields.count-1%>
<td>
<b>
<%=rs (i). Name%>
</b>
</td>
<% Next%>
</tr>
<% do and not rs.eof%>
<tr>
<% for i=0 to Rs.fields.count-1%>
<TD valign =top>
<%
If RS (i). Name= "Image" then
Response.Write " "
Else
If RS (i). name= "url" then
Response.Write "<a href=" "" &rs (i) & "" > "&rs (i) &" </a> "
Else
Response.Write RS (i)
End If
End If
%>
</td>
<%next%>
</tr>
<% Rs.movenext
Loop
Rs.close
Conn.close
%>
18. Using ASP to get browser information
The following is a reference fragment:
<%
Set A=server.creatobject ("MSWC. BrowserType ")
Msg= "The browser you are using is:" +a.browser+ "Version" +a.version
%>
<%=msg%>
How ASP accesses cookies (using response and request)
The following is a reference fragment:
As follows: Write cookies:
Response.Cookies ("Coookies name to write")
= "Data to write"
Read cookies:
Read Data =request.cookies ("cookie name to be read")
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